-35.87% is the change from 421 to 270
Calculation steps:
[( 270 - 421 ) ÷ 421] x 100 = -35.87%
Formula
Percentage change = [(270 - 421) / 421] x 100
Subtract the new number by the original number
270 - 421 = -151
-151 ÷ 421 = -0.3586698337292161
-0.3586698337292161 x 100 = -35.87%