247.3% is the change from 74 to 257
Calculation steps:
[( 257 - 74 ) ÷ 74] x 100 = 247.3%
Formula
Percentage change = [(257 - 74) / 74] x 100
Subtract the new number by the original number
257 - 74 = 183
183 ÷ 74 = 2.472972972972973
2.472972972972973 x 100 = 247.3%