-45.22% is the change from 951 to 521
Calculation steps:
[( 521 - 951 ) ÷ 951] x 100 = -45.22%
Formula
Percentage change = [(521 - 951) / 951] x 100
Subtract the new number by the original number
521 - 951 = -430
-430 ÷ 951 = -0.45215562565720296
-0.45215562565720296 x 100 = -45.22%