100.95% is the change from 423 to 850
Calculation steps:
[( 850 - 423 ) ÷ 423] x 100 = 100.95%
Formula
Percentage change = [(850 - 423) / 423] x 100
Subtract the new number by the original number
850 - 423 = 427
427 ÷ 423 = 1.0094562647754137
1.0094562647754137 x 100 = 100.95%