15500% is the change from 2 to 312
Calculation steps:
[( 312 - 2 ) ÷ 2] x 100 = 15500%
Formula
Percentage change = [(312 - 2) / 2] x 100
Subtract the new number by the original number
312 - 2 = 310
310 ÷ 2 = 155
155 x 100 = 15500%
Example