-47.02% is the change from 991 to 525
Calculation steps:
[( 525 - 991 ) ÷ 991] x 100 = -47.02%
Formula
Percentage change = [(525 - 991) / 991] x 100
Subtract the new number by the original number
525 - 991 = -466
-466 ÷ 991 = -0.47023208879919276
-0.47023208879919276 x 100 = -47.02%