-19.57% is the change from 966 to 777
Calculation steps:
[( 777 - 966 ) ÷ 966] x 100 = -19.57%
Formula
Percentage change = [(777 - 966) / 966] x 100
Subtract the new number by the original number
777 - 966 = -189
-189 ÷ 966 = -0.1956521739130435
-0.1956521739130435 x 100 = -19.57%