99.54% is the change from 216 to 431
Calculation steps:
[( 431 - 216 ) ÷ 216] x 100 = 99.54%
Formula
Percentage change = [(431 - 216) / 216] x 100
Subtract the new number by the original number
431 - 216 = 215
215 ÷ 216 = 0.9953703703703703
0.9953703703703703 x 100 = 99.54%