78.47% is the change from 274 to 489
Calculation steps:
[( 489 - 274 ) ÷ 274] x 100 = 78.47%
Formula
Percentage change = [(489 - 274) / 274] x 100
Subtract the new number by the original number
489 - 274 = 215
215 ÷ 274 = 0.7846715328467153
0.7846715328467153 x 100 = 78.47%