21.47% is the change from 177 to 215
Calculation steps:
[( 215 - 177 ) ÷ 177] x 100 = 21.47%
Formula
Percentage change = [(215 - 177) / 177] x 100
Subtract the new number by the original number
215 - 177 = 38
38 ÷ 177 = 0.21468926553672316
0.21468926553672316 x 100 = 21.47%