34.8% is the change from 431 to 581
Calculation steps:
[( 581 - 431 ) ÷ 431] x 100 = 34.8%
Formula
Percentage change = [(581 - 431) / 431] x 100
Subtract the new number by the original number
581 - 431 = 150
150 ÷ 431 = 0.3480278422273782
0.3480278422273782 x 100 = 34.8%