267.95% is the change from 78 to 287
Calculation steps:
[( 287 - 78 ) ÷ 78] x 100 = 267.95%
Formula
Percentage change = [(287 - 78) / 78] x 100
Subtract the new number by the original number
287 - 78 = 209
209 ÷ 78 = 2.6794871794871793
2.6794871794871793 x 100 = 267.95%