124.92% is the change from 305 to 686
Calculation steps:
[( 686 - 305 ) ÷ 305] x 100 = 124.92%
Formula
Percentage change = [(686 - 305) / 305] x 100
Subtract the new number by the original number
686 - 305 = 381
381 ÷ 305 = 1.2491803278688525
1.2491803278688525 x 100 = 124.92%