-36.94% is the change from 850 to 536
Calculation steps:
[( 536 - 850 ) ÷ 850] x 100 = -36.94%
Formula
Percentage change = [(536 - 850) / 850] x 100
Subtract the new number by the original number
536 - 850 = -314
-314 ÷ 850 = -0.36941176470588233
-0.36941176470588233 x 100 = -36.94%