2041.67% is the change from 12 to 257
Calculation steps:
[( 257 - 12 ) ÷ 12] x 100 = 2041.67%
Formula
Percentage change = [(257 - 12) / 12] x 100
Subtract the new number by the original number
257 - 12 = 245
245 ÷ 12 = 20.416666666666668
20.416666666666668 x 100 = 2041.67%