-2.38% is the change from 420 to 410
Calculation steps:
[( 410 - 420 ) ÷ 420] x 100 = -2.38%
Formula
Percentage change = [(410 - 420) / 420] x 100
Subtract the new number by the original number
410 - 420 = -10
-10 ÷ 420 = -0.023809523809523808
-0.023809523809523808 x 100 = -2.38%