260.21% is the change from 191 to 688
Calculation steps:
[( 688 - 191 ) ÷ 191] x 100 = 260.21%
Formula
Percentage change = [(688 - 191) / 191] x 100
Subtract the new number by the original number
688 - 191 = 497
497 ÷ 191 = 2.602094240837696
2.602094240837696 x 100 = 260.21%