78.75% is the change from 273 to 488
Calculation steps:
[( 488 - 273 ) ÷ 273] x 100 = 78.75%
Formula
Percentage change = [(488 - 273) / 273] x 100
Subtract the new number by the original number
488 - 273 = 215
215 ÷ 273 = 0.7875457875457875
0.7875457875457875 x 100 = 78.75%