83.45% is the change from 423 to 776
Calculation steps:
[( 776 - 423 ) ÷ 423] x 100 = 83.45%
Formula
Percentage change = [(776 - 423) / 423] x 100
Subtract the new number by the original number
776 - 423 = 353
353 ÷ 423 = 0.83451536643026
0.83451536643026 x 100 = 83.45%