135.65% is the change from 345 to 813
Calculation steps:
[( 813 - 345 ) ÷ 345] x 100 = 135.65%
Formula
Percentage change = [(813 - 345) / 345] x 100
Subtract the new number by the original number
813 - 345 = 468
468 ÷ 345 = 1.3565217391304347
1.3565217391304347 x 100 = 135.65%