321.62% is the change from 74 to 312
Calculation steps:
[( 312 - 74 ) ÷ 74] x 100 = 321.62%
Formula
Percentage change = [(312 - 74) / 74] x 100
Subtract the new number by the original number
312 - 74 = 238
238 ÷ 74 = 3.2162162162162162
3.2162162162162162 x 100 = 321.62%