-87.37% is the change from 657 to 83
Calculation steps:
[( 83 - 657 ) ÷ 657] x 100 = -87.37%
Formula
Percentage change = [(83 - 657) / 657] x 100
Subtract the new number by the original number
83 - 657 = -574
-574 ÷ 657 = -0.8736681887366818
-0.8736681887366818 x 100 = -87.37%