-84.54% is the change from 537 to 83
Calculation steps:
[( 83 - 537 ) ÷ 537] x 100 = -84.54%
Formula
Percentage change = [(83 - 537) / 537] x 100
Subtract the new number by the original number
83 - 537 = -454
-454 ÷ 537 = -0.845437616387337
-0.845437616387337 x 100 = -84.54%