-91.17% is the change from 815 to 72
Calculation steps:
[( 72 - 815 ) ÷ 815] x 100 = -91.17%
Formula
Percentage change = [(72 - 815) / 815] x 100
Subtract the new number by the original number
72 - 815 = -743
-743 ÷ 815 = -0.9116564417177914
-0.9116564417177914 x 100 = -91.17%