-19.38% is the change from 779 to 628
Calculation steps:
[( 628 - 779 ) ÷ 779] x 100 = -19.38%
Formula
Percentage change = [(628 - 779) / 779] x 100
Subtract the new number by the original number
628 - 779 = -151
-151 ÷ 779 = -0.19383825417201542
-0.19383825417201542 x 100 = -19.38%