-36.43% is the change from 818 to 520
Calculation steps:
[( 520 - 818 ) ÷ 818] x 100 = -36.43%
Formula
Percentage change = [(520 - 818) / 818] x 100
Subtract the new number by the original number
520 - 818 = -298
-298 ÷ 818 = -0.3643031784841076
-0.3643031784841076 x 100 = -36.43%