-47.95% is the change from 828 to 431
Calculation steps:
[( 431 - 828 ) ÷ 828] x 100 = -47.95%
Formula
Percentage change = [(431 - 828) / 828] x 100
Subtract the new number by the original number
431 - 828 = -397
-397 ÷ 828 = -0.47946859903381644
-0.47946859903381644 x 100 = -47.95%