-41.7% is the change from 861 to 502
Calculation steps:
[( 502 - 861 ) ÷ 861] x 100 = -41.7%
Formula
Percentage change = [(502 - 861) / 861] x 100
Subtract the new number by the original number
502 - 861 = -359
-359 ÷ 861 = -0.4169570267131243
-0.4169570267131243 x 100 = -41.7%