-61.5% is the change from 878 to 338
Calculation steps:
[( 338 - 878 ) ÷ 878] x 100 = -61.5%
Formula
Percentage change = [(338 - 878) / 878] x 100
Subtract the new number by the original number
338 - 878 = -540
-540 ÷ 878 = -0.6150341685649203
-0.6150341685649203 x 100 = -61.5%