256.15% is the change from 187 to 666
Calculation steps:
[( 666 - 187 ) ÷ 187] x 100 = 256.15%
Formula
Percentage change = [(666 - 187) / 187] x 100
Subtract the new number by the original number
666 - 187 = 479
479 ÷ 187 = 2.5614973262032086
2.5614973262032086 x 100 = 256.15%