138.27% is the change from 277 to 660
Calculation steps:
[( 660 - 277 ) ÷ 277] x 100 = 138.27%
Formula
Percentage change = [(660 - 277) / 277] x 100
Subtract the new number by the original number
660 - 277 = 383
383 ÷ 277 = 1.3826714801444044
1.3826714801444044 x 100 = 138.27%