-39.91% is the change from 877 to 527
Calculation steps:
[( 527 - 877 ) ÷ 877] x 100 = -39.91%
Formula
Percentage change = [(527 - 877) / 877] x 100
Subtract the new number by the original number
527 - 877 = -350
-350 ÷ 877 = -0.3990877993158495
-0.3990877993158495 x 100 = -39.91%