-1.11% is the change from 628 to 621
Calculation steps:
[( 621 - 628 ) ÷ 628] x 100 = -1.11%
Formula
Percentage change = [(621 - 628) / 628] x 100
Subtract the new number by the original number
621 - 628 = -7
-7 ÷ 628 = -0.011146496815286623
-0.011146496815286623 x 100 = -1.11%