-29.03% is the change from 620 to 440
Calculation steps:
[( 440 - 620 ) ÷ 620] x 100 = -29.03%
Formula
Percentage change = [(440 - 620) / 620] x 100
Subtract the new number by the original number
440 - 620 = -180
-180 ÷ 620 = -0.2903225806451613
-0.2903225806451613 x 100 = -29.03%