-80% is the change from 360 to 72
Calculation steps:
[( 72 - 360 ) ÷ 360] x 100 = -80%
Formula
Percentage change = [(72 - 360) / 360] x 100
Subtract the new number by the original number
72 - 360 = -288
-288 ÷ 360 = -0.8
-0.8 x 100 = -80%
Example