219.55% is the change from 312 to 997
Calculation steps:
[( 997 - 312 ) ÷ 312] x 100 = 219.55%
Formula
Percentage change = [(997 - 312) / 312] x 100
Subtract the new number by the original number
997 - 312 = 685
685 ÷ 312 = 2.1955128205128207
2.1955128205128207 x 100 = 219.55%