371.9% is the change from 210 to 991
Calculation steps:
[( 991 - 210 ) ÷ 210] x 100 = 371.9%
Formula
Percentage change = [(991 - 210) / 210] x 100
Subtract the new number by the original number
991 - 210 = 781
781 ÷ 210 = 3.719047619047619
3.719047619047619 x 100 = 371.9%