Kolkata, Sept. 22 -- West Bengal chief minister Mamata Banerjee on Sunday strongly criticised the Narendra Modi-led Union government on the new GST reforms, saying the tax changes will reduce the state's revenue by Rs.20,000 crore. Though Banerjee noted that the lowered tax slab rates will help citizens, the chief minister slammed the Prime Minister for taking credit for the rationalisation, saying the state had suggested the same. "We are losing Rs.20,000 crore as revenue, but we are happy about the lowering of GST. But why are you (Modi) claiming credit for it? We had sought a lowered GST. It was our suggestion at the GST Council meeting," she said in Kolkata. The comments came after PM Modi, in his address to the nation on Sunday evening, hailed the tax reforms , saying the move will help Indians save Rs.2.5 lakh crore. Banerjee, on Sunday, raised concerns about the lack of compensation over the projected losses caused by the tax changes. "They have deducted this GST from the share of the states but the states have not been compensated in any way. Bharatiya Janata Party (BJP)-ruled states will be paid back in some form or the other but what will happen to states like ours?" she said....