-39.79% is the change from 877 to 528
Calculation steps:
[( 528 - 877 ) ÷ 877] x 100 = -39.79%
Formula
Percentage change = [(528 - 877) / 877] x 100
Subtract the new number by the original number
528 - 877 = -349
-349 ÷ 877 = -0.3979475484606613
-0.3979475484606613 x 100 = -39.79%