-91.37% is the change from 811 to 70
Calculation steps:
[( 70 - 811 ) ÷ 811] x 100 = -91.37%
Formula
Percentage change = [(70 - 811) / 811] x 100
Subtract the new number by the original number
70 - 811 = -741
-741 ÷ 811 = -0.9136868064118372
-0.9136868064118372 x 100 = -91.37%