85.31% is the change from 211 to 391
Calculation steps:
[( 391 - 211 ) ÷ 211] x 100 = 85.31%
Formula
Percentage change = [(391 - 211) / 211] x 100
Subtract the new number by the original number
391 - 211 = 180
180 ÷ 211 = 0.8530805687203792
0.8530805687203792 x 100 = 85.31%