-49.18% is the change from 850 to 432
Calculation steps:
[( 432 - 850 ) ÷ 850] x 100 = -49.18%
Formula
Percentage change = [(432 - 850) / 850] x 100
Subtract the new number by the original number
432 - 850 = -418
-418 ÷ 850 = -0.49176470588235294
-0.49176470588235294 x 100 = -49.18%