-15.53% is the change from 850 to 718
Calculation steps:
[( 718 - 850 ) ÷ 850] x 100 = -15.53%
Formula
Percentage change = [(718 - 850) / 850] x 100
Subtract the new number by the original number
718 - 850 = -132
-132 ÷ 850 = -0.15529411764705883
-0.15529411764705883 x 100 = -15.53%