66% is the change from 150 to 249
Calculation steps:
[( 249 - 150 ) ÷ 150] x 100 = 66%
Formula
Percentage change = [(249 - 150) / 150] x 100
Subtract the new number by the original number
249 - 150 = 99
99 ÷ 150 = 0.66
0.66 x 100 = 66%
Example