-2.17% is the change from 783 to 766
Calculation steps:
[( 766 - 783 ) ÷ 783] x 100 = -2.17%
Formula
Percentage change = [(766 - 783) / 783] x 100
Subtract the new number by the original number
766 - 783 = -17
-17 ÷ 783 = -0.021711366538952746
-0.021711366538952746 x 100 = -2.17%