47.2% is the change from 286 to 421
Calculation steps:
[( 421 - 286 ) ÷ 286] x 100 = 47.2%
Formula
Percentage change = [(421 - 286) / 286] x 100
Subtract the new number by the original number
421 - 286 = 135
135 ÷ 286 = 0.47202797202797203
0.47202797202797203 x 100 = 47.2%