-87.95% is the change from 689 to 83
Calculation steps:
[( 83 - 689 ) ÷ 689] x 100 = -87.95%
Formula
Percentage change = [(83 - 689) / 689] x 100
Subtract the new number by the original number
83 - 689 = -606
-606 ÷ 689 = -0.8795355587808418
-0.8795355587808418 x 100 = -87.95%