258.7% is the change from 184 to 660
Calculation steps:
[( 660 - 184 ) ÷ 184] x 100 = 258.7%
Formula
Percentage change = [(660 - 184) / 184] x 100
Subtract the new number by the original number
660 - 184 = 476
476 ÷ 184 = 2.5869565217391304
2.5869565217391304 x 100 = 258.7%