200% is the change from 304 to 912
Calculation steps:
[( 912 - 304 ) ÷ 304] x 100 = 200%
Formula
Percentage change = [(912 - 304) / 304] x 100
Subtract the new number by the original number
912 - 304 = 608
608 ÷ 304 = 2
2 x 100 = 200%
Example