-6.2% is the change from 936 to 878
Calculation steps:
[( 878 - 936 ) ÷ 936] x 100 = -6.2%
Formula
Percentage change = [(878 - 936) / 936] x 100
Subtract the new number by the original number
878 - 936 = -58
-58 ÷ 936 = -0.06196581196581197
-0.06196581196581197 x 100 = -6.2%