215.06% is the change from 312 to 983
Calculation steps:
[( 983 - 312 ) ÷ 312] x 100 = 215.06%
Formula
Percentage change = [(983 - 312) / 312] x 100
Subtract the new number by the original number
983 - 312 = 671
671 ÷ 312 = 2.1506410256410255
2.1506410256410255 x 100 = 215.06%