-29.29% is the change from 420 to 297
Calculation steps:
[( 297 - 420 ) ÷ 420] x 100 = -29.29%
Formula
Percentage change = [(297 - 420) / 420] x 100
Subtract the new number by the original number
297 - 420 = -123
-123 ÷ 420 = -0.29285714285714287
-0.29285714285714287 x 100 = -29.29%