250.79% is the change from 191 to 670
Calculation steps:
[( 670 - 191 ) ÷ 191] x 100 = 250.79%
Formula
Percentage change = [(670 - 191) / 191] x 100
Subtract the new number by the original number
670 - 191 = 479
479 ÷ 191 = 2.507853403141361
2.507853403141361 x 100 = 250.79%