-91.34% is the change from 831 to 72
Calculation steps:
[( 72 - 831 ) ÷ 831] x 100 = -91.34%
Formula
Percentage change = [(72 - 831) / 831] x 100
Subtract the new number by the original number
72 - 831 = -759
-759 ÷ 831 = -0.9133574007220217
-0.9133574007220217 x 100 = -91.34%