-71.96% is the change from 813 to 228
Calculation steps:
[( 228 - 813 ) ÷ 813] x 100 = -71.96%
Formula
Percentage change = [(228 - 813) / 813] x 100
Subtract the new number by the original number
228 - 813 = -585
-585 ÷ 813 = -0.7195571955719557
-0.7195571955719557 x 100 = -71.96%