134.87% is the change from 347 to 815
Calculation steps:
[( 815 - 347 ) ÷ 347] x 100 = 134.87%
Formula
Percentage change = [(815 - 347) / 347] x 100
Subtract the new number by the original number
815 - 347 = 468
468 ÷ 347 = 1.3487031700288183
1.3487031700288183 x 100 = 134.87%