-22.4% is the change from 799 to 620
Calculation steps:
[( 620 - 799 ) ÷ 799] x 100 = -22.4%
Formula
Percentage change = [(620 - 799) / 799] x 100
Subtract the new number by the original number
620 - 799 = -179
-179 ÷ 799 = -0.22403003754693368
-0.22403003754693368 x 100 = -22.4%