-39.98% is the change from 878 to 527
Calculation steps:
[( 527 - 878 ) ÷ 878] x 100 = -39.98%
Formula
Percentage change = [(527 - 878) / 878] x 100
Subtract the new number by the original number
527 - 878 = -351
-351 ÷ 878 = -0.39977220956719817
-0.39977220956719817 x 100 = -39.98%