200% is the change from 312 to 936
Calculation steps:
[( 936 - 312 ) ÷ 312] x 100 = 200%
Formula
Percentage change = [(936 - 312) / 312] x 100
Subtract the new number by the original number
936 - 312 = 624
624 ÷ 312 = 2
2 x 100 = 200%
Example