-20.15% is the change from 779 to 622
Calculation steps:
[( 622 - 779 ) ÷ 779] x 100 = -20.15%
Formula
Percentage change = [(622 - 779) / 779] x 100
Subtract the new number by the original number
622 - 779 = -157
-157 ÷ 779 = -0.20154043645699615
-0.20154043645699615 x 100 = -20.15%