-86.78% is the change from 628 to 83
Calculation steps:
[( 83 - 628 ) ÷ 628] x 100 = -86.78%
Formula
Percentage change = [(83 - 628) / 628] x 100
Subtract the new number by the original number
83 - 628 = -545
-545 ÷ 628 = -0.8678343949044586
-0.8678343949044586 x 100 = -86.78%