-34.94% is the change from 621 to 404
Calculation steps:
[( 404 - 621 ) ÷ 621] x 100 = -34.94%
Formula
Percentage change = [(404 - 621) / 621] x 100
Subtract the new number by the original number
404 - 621 = -217
-217 ÷ 621 = -0.3494363929146538
-0.3494363929146538 x 100 = -34.94%