64.98% is the change from 277 to 457
Calculation steps:
[( 457 - 277 ) ÷ 277] x 100 = 64.98%
Formula
Percentage change = [(457 - 277) / 277] x 100
Subtract the new number by the original number
457 - 277 = 180
180 ÷ 277 = 0.6498194945848376
0.6498194945848376 x 100 = 64.98%