15200% is the change from 2 to 306
Calculation steps:
[( 306 - 2 ) ÷ 2] x 100 = 15200%
Formula
Percentage change = [(306 - 2) / 2] x 100
Subtract the new number by the original number
306 - 2 = 304
304 ÷ 2 = 152
152 x 100 = 15200%
Example