146.15% is the change from 312 to 768
Calculation steps:
[( 768 - 312 ) ÷ 312] x 100 = 146.15%
Formula
Percentage change = [(768 - 312) / 312] x 100
Subtract the new number by the original number
768 - 312 = 456
456 ÷ 312 = 1.4615384615384615
1.4615384615384615 x 100 = 146.15%