-2.74% is the change from 620 to 603
Calculation steps:
[( 603 - 620 ) ÷ 620] x 100 = -2.74%
Formula
Percentage change = [(603 - 620) / 620] x 100
Subtract the new number by the original number
603 - 620 = -17
-17 ÷ 620 = -0.027419354838709678
-0.027419354838709678 x 100 = -2.74%