88.51% is the change from 435 to 820
Calculation steps:
[( 820 - 435 ) ÷ 435] x 100 = 88.51%
Formula
Percentage change = [(820 - 435) / 435] x 100
Subtract the new number by the original number
820 - 435 = 385
385 ÷ 435 = 0.8850574712643678
0.8850574712643678 x 100 = 88.51%