-17.9% is the change from 933 to 766
Calculation steps:
[( 766 - 933 ) ÷ 933] x 100 = -17.9%
Formula
Percentage change = [(766 - 933) / 933] x 100
Subtract the new number by the original number
766 - 933 = -167
-167 ÷ 933 = -0.1789924973204716
-0.1789924973204716 x 100 = -17.9%