155.23% is the change from 306 to 781
Calculation steps:
[( 781 - 306 ) ÷ 306] x 100 = 155.23%
Formula
Percentage change = [(781 - 306) / 306] x 100
Subtract the new number by the original number
781 - 306 = 475
475 ÷ 306 = 1.5522875816993464
1.5522875816993464 x 100 = 155.23%