60.47% is the change from 215 to 345
Calculation steps:
[( 345 - 215 ) ÷ 215] x 100 = 60.47%
Formula
Percentage change = [(345 - 215) / 215] x 100
Subtract the new number by the original number
345 - 215 = 130
130 ÷ 215 = 0.6046511627906976
0.6046511627906976 x 100 = 60.47%