100% is the change from 426 to 852
Calculation steps:
[( 852 - 426 ) ÷ 426] x 100 = 100%
Formula
Percentage change = [(852 - 426) / 426] x 100
Subtract the new number by the original number
852 - 426 = 426
426 ÷ 426 = 1
1 x 100 = 100%
Example