-54.1% is the change from 989 to 454
Calculation steps:
[( 454 - 989 ) ÷ 989] x 100 = -54.1%
Formula
Percentage change = [(454 - 989) / 989] x 100
Subtract the new number by the original number
454 - 989 = -535
-535 ÷ 989 = -0.5409504550050556
-0.5409504550050556 x 100 = -54.1%