33.54% is the change from 161 to 215
Calculation steps:
[( 215 - 161 ) ÷ 161] x 100 = 33.54%
Formula
Percentage change = [(215 - 161) / 161] x 100
Subtract the new number by the original number
215 - 161 = 54
54 ÷ 161 = 0.33540372670807456
0.33540372670807456 x 100 = 33.54%