-74.58% is the change from 531 to 135
Calculation steps:
[( 135 - 531 ) ÷ 531] x 100 = -74.58%
Formula
Percentage change = [(135 - 531) / 531] x 100
Subtract the new number by the original number
135 - 531 = -396
-396 ÷ 531 = -0.7457627118644068
-0.7457627118644068 x 100 = -74.58%