-30.25% is the change from 747 to 521
Calculation steps:
[( 521 - 747 ) ÷ 747] x 100 = -30.25%
Formula
Percentage change = [(521 - 747) / 747] x 100
Subtract the new number by the original number
521 - 747 = -226
-226 ÷ 747 = -0.30254350736278446
-0.30254350736278446 x 100 = -30.25%