-23.06% is the change from 850 to 654
Calculation steps:
[( 654 - 850 ) ÷ 850] x 100 = -23.06%
Formula
Percentage change = [(654 - 850) / 850] x 100
Subtract the new number by the original number
654 - 850 = -196
-196 ÷ 850 = -0.23058823529411765
-0.23058823529411765 x 100 = -23.06%