71% is the change from 200 to 342
Calculation steps:
[( 342 - 200 ) ÷ 200] x 100 = 71%
Formula
Percentage change = [(342 - 200) / 200] x 100
Subtract the new number by the original number
342 - 200 = 142
142 ÷ 200 = 0.71
0.71 x 100 = 71%
Example