-36.9% is the change from 420 to 265
Calculation steps:
[( 265 - 420 ) ÷ 420] x 100 = -36.9%
Formula
Percentage change = [(265 - 420) / 420] x 100
Subtract the new number by the original number
265 - 420 = -155
-155 ÷ 420 = -0.36904761904761907
-0.36904761904761907 x 100 = -36.9%