-2.39% is the change from 628 to 613
Calculation steps:
[( 613 - 628 ) ÷ 628] x 100 = -2.39%
Formula
Percentage change = [(613 - 628) / 628] x 100
Subtract the new number by the original number
613 - 628 = -15
-15 ÷ 628 = -0.02388535031847134
-0.02388535031847134 x 100 = -2.39%