-21.91% is the change from 794 to 620
Calculation steps:
[( 620 - 794 ) ÷ 794] x 100 = -21.91%
Formula
Percentage change = [(620 - 794) / 794] x 100
Subtract the new number by the original number
620 - 794 = -174
-174 ÷ 794 = -0.21914357682619648
-0.21914357682619648 x 100 = -21.91%