-14.9% is the change from 913 to 777
Calculation steps:
[( 777 - 913 ) ÷ 913] x 100 = -14.9%
Formula
Percentage change = [(777 - 913) / 913] x 100
Subtract the new number by the original number
777 - 913 = -136
-136 ÷ 913 = -0.14895947426067907
-0.14895947426067907 x 100 = -14.9%