213.46% is the change from 312 to 978
Calculation steps:
[( 978 - 312 ) ÷ 312] x 100 = 213.46%
Formula
Percentage change = [(978 - 312) / 312] x 100
Subtract the new number by the original number
978 - 312 = 666
666 ÷ 312 = 2.1346153846153846
2.1346153846153846 x 100 = 213.46%