-81.43% is the change from 813 to 151
Calculation steps:
[( 151 - 813 ) ÷ 813] x 100 = -81.43%
Formula
Percentage change = [(151 - 813) / 813] x 100
Subtract the new number by the original number
151 - 813 = -662
-662 ÷ 813 = -0.8142681426814268
-0.8142681426814268 x 100 = -81.43%