-30.17% is the change from 421 to 294
Calculation steps:
[( 294 - 421 ) ÷ 421] x 100 = -30.17%
Formula
Percentage change = [(294 - 421) / 421] x 100
Subtract the new number by the original number
294 - 421 = -127
-127 ÷ 421 = -0.3016627078384798
-0.3016627078384798 x 100 = -30.17%