-42.76% is the change from 877 to 502
Calculation steps:
[( 502 - 877 ) ÷ 877] x 100 = -42.76%
Formula
Percentage change = [(502 - 877) / 877] x 100
Subtract the new number by the original number
502 - 877 = -375
-375 ÷ 877 = -0.427594070695553
-0.427594070695553 x 100 = -42.76%