-75.72% is the change from 939 to 228
Calculation steps:
[( 228 - 939 ) ÷ 939] x 100 = -75.72%
Formula
Percentage change = [(228 - 939) / 939] x 100
Subtract the new number by the original number
228 - 939 = -711
-711 ÷ 939 = -0.7571884984025559
-0.7571884984025559 x 100 = -75.72%