278.53% is the change from 177 to 670
Calculation steps:
[( 670 - 177 ) ÷ 177] x 100 = 278.53%
Formula
Percentage change = [(670 - 177) / 177] x 100
Subtract the new number by the original number
670 - 177 = 493
493 ÷ 177 = 2.785310734463277
2.785310734463277 x 100 = 278.53%