50% is the change from 276 to 414
Calculation steps:
[( 414 - 276 ) ÷ 276] x 100 = 50%
Formula
Percentage change = [(414 - 276) / 276] x 100
Subtract the new number by the original number
414 - 276 = 138
138 ÷ 276 = 0.5
0.5 x 100 = 50%
Example