-0.48% is the change from 620 to 617
Calculation steps:
[( 617 - 620 ) ÷ 620] x 100 = -0.48%
Formula
Percentage change = [(617 - 620) / 620] x 100
Subtract the new number by the original number
617 - 620 = -3
-3 ÷ 620 = -0.004838709677419355
-0.004838709677419355 x 100 = -0.48%