-2.55% is the change from 628 to 612
Calculation steps:
[( 612 - 628 ) ÷ 628] x 100 = -2.55%
Formula
Percentage change = [(612 - 628) / 628] x 100
Subtract the new number by the original number
612 - 628 = -16
-16 ÷ 628 = -0.025477707006369428
-0.025477707006369428 x 100 = -2.55%