142.43% is the change from 337 to 817
Calculation steps:
[( 817 - 337 ) ÷ 337] x 100 = 142.43%
Formula
Percentage change = [(817 - 337) / 337] x 100
Subtract the new number by the original number
817 - 337 = 480
480 ÷ 337 = 1.42433234421365
1.42433234421365 x 100 = 142.43%