54.52% is the change from 343 to 530
Calculation steps:
[( 530 - 343 ) ÷ 343] x 100 = 54.52%
Formula
Percentage change = [(530 - 343) / 343] x 100
Subtract the new number by the original number
530 - 343 = 187
187 ÷ 343 = 0.5451895043731778
0.5451895043731778 x 100 = 54.52%