-49.15% is the change from 826 to 420
Calculation steps:
[( 420 - 826 ) ÷ 826] x 100 = -49.15%
Formula
Percentage change = [(420 - 826) / 826] x 100
Subtract the new number by the original number
420 - 826 = -406
-406 ÷ 826 = -0.4915254237288136
-0.4915254237288136 x 100 = -49.15%