-30.9% is the change from 712 to 492
Calculation steps:
[( 492 - 712 ) ÷ 712] x 100 = -30.9%
Formula
Percentage change = [(492 - 712) / 712] x 100
Subtract the new number by the original number
492 - 712 = -220
-220 ÷ 712 = -0.3089887640449438
-0.3089887640449438 x 100 = -30.9%