71.05% is the change from 342 to 585
Calculation steps:
[( 585 - 342 ) ÷ 342] x 100 = 71.05%
Formula
Percentage change = [(585 - 342) / 342] x 100
Subtract the new number by the original number
585 - 342 = 243
243 ÷ 342 = 0.7105263157894737
0.7105263157894737 x 100 = 71.05%