-58.35% is the change from 850 to 354
Calculation steps:
[( 354 - 850 ) ÷ 850] x 100 = -58.35%
Formula
Percentage change = [(354 - 850) / 850] x 100
Subtract the new number by the original number
354 - 850 = -496
-496 ÷ 850 = -0.5835294117647059
-0.5835294117647059 x 100 = -58.35%