51.2% is the change from 291 to 440
Calculation steps:
[( 440 - 291 ) ÷ 291] x 100 = 51.2%
Formula
Percentage change = [(440 - 291) / 291] x 100
Subtract the new number by the original number
440 - 291 = 149
149 ÷ 291 = 0.5120274914089347
0.5120274914089347 x 100 = 51.2%