-6.92% is the change from 621 to 578
Calculation steps:
[( 578 - 621 ) ÷ 621] x 100 = -6.92%
Formula
Percentage change = [(578 - 621) / 621] x 100
Subtract the new number by the original number
578 - 621 = -43
-43 ÷ 621 = -0.06924315619967794
-0.06924315619967794 x 100 = -6.92%