51.43% is the change from 350 to 530
Calculation steps:
[( 530 - 350 ) ÷ 350] x 100 = 51.43%
Formula
Percentage change = [(530 - 350) / 350] x 100
Subtract the new number by the original number
530 - 350 = 180
180 ÷ 350 = 0.5142857142857142
0.5142857142857142 x 100 = 51.43%