51.59% is the change from 345 to 523
Calculation steps:
[( 523 - 345 ) ÷ 345] x 100 = 51.59%
Formula
Percentage change = [(523 - 345) / 345] x 100
Subtract the new number by the original number
523 - 345 = 178
178 ÷ 345 = 0.5159420289855072
0.5159420289855072 x 100 = 51.59%