-34.3% is the change from 793 to 521
Calculation steps:
[( 521 - 793 ) ÷ 793] x 100 = -34.3%
Formula
Percentage change = [(521 - 793) / 793] x 100
Subtract the new number by the original number
521 - 793 = -272
-272 ÷ 793 = -0.34300126103404793
-0.34300126103404793 x 100 = -34.3%