79.12% is the change from 273 to 489
Calculation steps:
[( 489 - 273 ) ÷ 273] x 100 = 79.12%
Formula
Percentage change = [(489 - 273) / 273] x 100
Subtract the new number by the original number
489 - 273 = 216
216 ÷ 273 = 0.7912087912087912
0.7912087912087912 x 100 = 79.12%