134.8% is the change from 342 to 803
Calculation steps:
[( 803 - 342 ) ÷ 342] x 100 = 134.8%
Formula
Percentage change = [(803 - 342) / 342] x 100
Subtract the new number by the original number
803 - 342 = 461
461 ÷ 342 = 1.347953216374269
1.347953216374269 x 100 = 134.8%