-97.59% is the change from 83 to 2
Calculation steps:
[( 2 - 83 ) ÷ 83] x 100 = -97.59%
Formula
Percentage change = [(2 - 83) / 83] x 100
Subtract the new number by the original number
2 - 83 = -81
-81 ÷ 83 = -0.9759036144578314
-0.9759036144578314 x 100 = -97.59%