-55.56% is the change from 621 to 276
Calculation steps:
[( 276 - 621 ) ÷ 621] x 100 = -55.56%
Formula
Percentage change = [(276 - 621) / 621] x 100
Subtract the new number by the original number
276 - 621 = -345
-345 ÷ 621 = -0.5555555555555556
-0.5555555555555556 x 100 = -55.56%