-38.35% is the change from 850 to 524
Calculation steps:
[( 524 - 850 ) ÷ 850] x 100 = -38.35%
Formula
Percentage change = [(524 - 850) / 850] x 100
Subtract the new number by the original number
524 - 850 = -326
-326 ÷ 850 = -0.3835294117647059
-0.3835294117647059 x 100 = -38.35%