-33.58% is the change from 813 to 540
Calculation steps:
[( 540 - 813 ) ÷ 813] x 100 = -33.58%
Formula
Percentage change = [(540 - 813) / 813] x 100
Subtract the new number by the original number
540 - 813 = -273
-273 ÷ 813 = -0.33579335793357934
-0.33579335793357934 x 100 = -33.58%