-25.25% is the change from 697 to 521
Calculation steps:
[( 521 - 697 ) ÷ 697] x 100 = -25.25%
Formula
Percentage change = [(521 - 697) / 697] x 100
Subtract the new number by the original number
521 - 697 = -176
-176 ÷ 697 = -0.25251076040172166
-0.25251076040172166 x 100 = -25.25%