1277.78% is the change from 18 to 248
Calculation steps:
[( 248 - 18 ) ÷ 18] x 100 = 1277.78%
Formula
Percentage change = [(248 - 18) / 18] x 100
Subtract the new number by the original number
248 - 18 = 230
230 ÷ 18 = 12.777777777777779
12.777777777777779 x 100 = 1277.78%