-45.04% is the change from 948 to 521
Calculation steps:
[( 521 - 948 ) ÷ 948] x 100 = -45.04%
Formula
Percentage change = [(521 - 948) / 948] x 100
Subtract the new number by the original number
521 - 948 = -427
-427 ÷ 948 = -0.45042194092827004
-0.45042194092827004 x 100 = -45.04%