108.3% is the change from 277 to 577
Calculation steps:
[( 577 - 277 ) ÷ 277] x 100 = 108.3%
Formula
Percentage change = [(577 - 277) / 277] x 100
Subtract the new number by the original number
577 - 277 = 300
300 ÷ 277 = 1.0830324909747293
1.0830324909747293 x 100 = 108.3%