-29.15% is the change from 621 to 440
Calculation steps:
[( 440 - 621 ) ÷ 621] x 100 = -29.15%
Formula
Percentage change = [(440 - 621) / 621] x 100
Subtract the new number by the original number
440 - 621 = -181
-181 ÷ 621 = -0.2914653784219002
-0.2914653784219002 x 100 = -29.15%