-29.83% is the change from 600 to 421
Calculation steps:
[( 421 - 600 ) ÷ 600] x 100 = -29.83%
Formula
Percentage change = [(421 - 600) / 600] x 100
Subtract the new number by the original number
421 - 600 = -179
-179 ÷ 600 = -0.29833333333333334
-0.29833333333333334 x 100 = -29.83%