60% is the change from 345 to 552
Calculation steps:
[( 552 - 345 ) ÷ 345] x 100 = 60%
Formula
Percentage change = [(552 - 345) / 345] x 100
Subtract the new number by the original number
552 - 345 = 207
207 ÷ 345 = 0.6
0.6 x 100 = 60%
Example