-65.15% is the change from 617 to 215
Calculation steps:
[( 215 - 617 ) ÷ 617] x 100 = -65.15%
Formula
Percentage change = [(215 - 617) / 617] x 100
Subtract the new number by the original number
215 - 617 = -402
-402 ÷ 617 = -0.6515397082658023
-0.6515397082658023 x 100 = -65.15%