93.85% is the change from 423 to 820
Calculation steps:
[( 820 - 423 ) ÷ 423] x 100 = 93.85%
Formula
Percentage change = [(820 - 423) / 423] x 100
Subtract the new number by the original number
820 - 423 = 397
397 ÷ 423 = 0.9385342789598109
0.9385342789598109 x 100 = 93.85%