-17.78% is the change from 945 to 777
Calculation steps:
[( 777 - 945 ) ÷ 945] x 100 = -17.78%
Formula
Percentage change = [(777 - 945) / 945] x 100
Subtract the new number by the original number
777 - 945 = -168
-168 ÷ 945 = -0.17777777777777778
-0.17777777777777778 x 100 = -17.78%