-83.24% is the change from 537 to 90
Calculation steps:
[( 90 - 537 ) ÷ 537] x 100 = -83.24%
Formula
Percentage change = [(90 - 537) / 537] x 100
Subtract the new number by the original number
90 - 537 = -447
-447 ÷ 537 = -0.8324022346368715
-0.8324022346368715 x 100 = -83.24%