92.17% is the change from 345 to 663
Calculation steps:
[( 663 - 345 ) ÷ 345] x 100 = 92.17%
Formula
Percentage change = [(663 - 345) / 345] x 100
Subtract the new number by the original number
663 - 345 = 318
318 ÷ 345 = 0.9217391304347826
0.9217391304347826 x 100 = 92.17%