-91.08% is the change from 437 to 39
Calculation steps:
[( 39 - 437 ) ÷ 437] x 100 = -91.08%
Formula
Percentage change = [(39 - 437) / 437] x 100
Subtract the new number by the original number
39 - 437 = -398
-398 ÷ 437 = -0.9107551487414187
-0.9107551487414187 x 100 = -91.08%