-93.88% is the change from 621 to 38
Calculation steps:
[( 38 - 621 ) ÷ 621] x 100 = -93.88%
Formula
Percentage change = [(38 - 621) / 621] x 100
Subtract the new number by the original number
38 - 621 = -583
-583 ÷ 621 = -0.9388083735909822
-0.9388083735909822 x 100 = -93.88%