-20% is the change from 785 to 628
Calculation steps:
[( 628 - 785 ) ÷ 785] x 100 = -20%
Formula
Percentage change = [(628 - 785) / 785] x 100
Subtract the new number by the original number
628 - 785 = -157
-157 ÷ 785 = -0.2
-0.2 x 100 = -20%
Example