90.43% is the change from 345 to 657
Calculation steps:
[( 657 - 345 ) ÷ 345] x 100 = 90.43%
Formula
Percentage change = [(657 - 345) / 345] x 100
Subtract the new number by the original number
657 - 345 = 312
312 ÷ 345 = 0.9043478260869565
0.9043478260869565 x 100 = 90.43%