-88.56% is the change from 813 to 93
Calculation steps:
[( 93 - 813 ) ÷ 813] x 100 = -88.56%
Formula
Percentage change = [(93 - 813) / 813] x 100
Subtract the new number by the original number
93 - 813 = -720
-720 ÷ 813 = -0.8856088560885609
-0.8856088560885609 x 100 = -88.56%