-87.95% is the change from 813 to 98
Calculation steps:
[( 98 - 813 ) ÷ 813] x 100 = -87.95%
Formula
Percentage change = [(98 - 813) / 813] x 100
Subtract the new number by the original number
98 - 813 = -715
-715 ÷ 813 = -0.8794587945879458
-0.8794587945879458 x 100 = -87.95%