-2.25% is the change from 533 to 521
Calculation steps:
[( 521 - 533 ) ÷ 533] x 100 = -2.25%
Formula
Percentage change = [(521 - 533) / 533] x 100
Subtract the new number by the original number
521 - 533 = -12
-12 ÷ 533 = -0.0225140712945591
-0.0225140712945591 x 100 = -2.25%