-25.65% is the change from 421 to 313
Calculation steps:
[( 313 - 421 ) ÷ 421] x 100 = -25.65%
Formula
Percentage change = [(313 - 421) / 421] x 100
Subtract the new number by the original number
313 - 421 = -108
-108 ÷ 421 = -0.25653206650831356
-0.25653206650831356 x 100 = -25.65%