-87.39% is the change from 658 to 83
Calculation steps:
[( 83 - 658 ) ÷ 658] x 100 = -87.39%
Formula
Percentage change = [(83 - 658) / 658] x 100
Subtract the new number by the original number
83 - 658 = -575
-575 ÷ 658 = -0.8738601823708206
-0.8738601823708206 x 100 = -87.39%