15250% is the change from 2 to 307
Calculation steps:
[( 307 - 2 ) ÷ 2] x 100 = 15250%
Formula
Percentage change = [(307 - 2) / 2] x 100
Subtract the new number by the original number
307 - 2 = 305
305 ÷ 2 = 152.5
152.5 x 100 = 15250%
Example