-38.49% is the change from 847 to 521
Calculation steps:
[( 521 - 847 ) ÷ 847] x 100 = -38.49%
Formula
Percentage change = [(521 - 847) / 847] x 100
Subtract the new number by the original number
521 - 847 = -326
-326 ÷ 847 = -0.38488783943329397
-0.38488783943329397 x 100 = -38.49%