-82.32% is the change from 492 to 87
Calculation steps:
[( 87 - 492 ) ÷ 492] x 100 = -82.32%
Formula
Percentage change = [(87 - 492) / 492] x 100
Subtract the new number by the original number
87 - 492 = -405
-405 ÷ 492 = -0.823170731707317
-0.823170731707317 x 100 = -82.32%