2050% is the change from 12 to 258
Calculation steps:
[( 258 - 12 ) ÷ 12] x 100 = 2050%
Formula
Percentage change = [(258 - 12) / 12] x 100
Subtract the new number by the original number
258 - 12 = 246
246 ÷ 12 = 20.5
20.5 x 100 = 2050%
Example