83.89% is the change from 211 to 388
Calculation steps:
[( 388 - 211 ) ÷ 211] x 100 = 83.89%
Formula
Percentage change = [(388 - 211) / 211] x 100
Subtract the new number by the original number
388 - 211 = 177
177 ÷ 211 = 0.8388625592417062
0.8388625592417062 x 100 = 83.89%