256.02% is the change from 191 to 680
Calculation steps:
[( 680 - 191 ) ÷ 191] x 100 = 256.02%
Formula
Percentage change = [(680 - 191) / 191] x 100
Subtract the new number by the original number
680 - 191 = 489
489 ÷ 191 = 2.56020942408377
2.56020942408377 x 100 = 256.02%