-3.34% is the change from 628 to 607
Calculation steps:
[( 607 - 628 ) ÷ 628] x 100 = -3.34%
Formula
Percentage change = [(607 - 628) / 628] x 100
Subtract the new number by the original number
607 - 628 = -21
-21 ÷ 628 = -0.03343949044585987
-0.03343949044585987 x 100 = -3.34%