-46.29% is the change from 970 to 521
Calculation steps:
[( 521 - 970 ) ÷ 970] x 100 = -46.29%
Formula
Percentage change = [(521 - 970) / 970] x 100
Subtract the new number by the original number
521 - 970 = -449
-449 ÷ 970 = -0.46288659793814435
-0.46288659793814435 x 100 = -46.29%