26.05% is the change from 334 to 421
Calculation steps:
[( 421 - 334 ) ÷ 334] x 100 = 26.05%
Formula
Percentage change = [(421 - 334) / 334] x 100
Subtract the new number by the original number
421 - 334 = 87
87 ÷ 334 = 0.26047904191616766
0.26047904191616766 x 100 = 26.05%