-34.71% is the change from 798 to 521
Calculation steps:
[( 521 - 798 ) ÷ 798] x 100 = -34.71%
Formula
Percentage change = [(521 - 798) / 798] x 100
Subtract the new number by the original number
521 - 798 = -277
-277 ÷ 798 = -0.34711779448621555
-0.34711779448621555 x 100 = -34.71%