-97.22% is the change from 72 to 2
Calculation steps:
[( 2 - 72 ) ÷ 72] x 100 = -97.22%
Formula
Percentage change = [(2 - 72) / 72] x 100
Subtract the new number by the original number
2 - 72 = -70
-70 ÷ 72 = -0.9722222222222222
-0.9722222222222222 x 100 = -97.22%