-36.82% is the change from 850 to 537
Calculation steps:
[( 537 - 850 ) ÷ 850] x 100 = -36.82%
Formula
Percentage change = [(537 - 850) / 850] x 100
Subtract the new number by the original number
537 - 850 = -313
-313 ÷ 850 = -0.36823529411764705
-0.36823529411764705 x 100 = -36.82%