-16.1% is the change from 913 to 766
Calculation steps:
[( 766 - 913 ) ÷ 913] x 100 = -16.1%
Formula
Percentage change = [(766 - 913) / 913] x 100
Subtract the new number by the original number
766 - 913 = -147
-147 ÷ 913 = -0.16100766703176342
-0.16100766703176342 x 100 = -16.1%