-8.9% is the change from 933 to 850
Calculation steps:
[( 850 - 933 ) ÷ 933] x 100 = -8.9%
Formula
Percentage change = [(850 - 933) / 933] x 100
Subtract the new number by the original number
850 - 933 = -83
-83 ÷ 933 = -0.08896034297963558
-0.08896034297963558 x 100 = -8.9%