142.24% is the change from 277 to 671
Calculation steps:
[( 671 - 277 ) ÷ 277] x 100 = 142.24%
Formula
Percentage change = [(671 - 277) / 277] x 100
Subtract the new number by the original number
671 - 277 = 394
394 ÷ 277 = 1.4223826714801444
1.4223826714801444 x 100 = 142.24%