-99.7% is the change from 332 to 1
Calculation steps:
[( 1 - 332 ) ÷ 332] x 100 = -99.7%
Formula
Percentage change = [(1 - 332) / 332] x 100
Subtract the new number by the original number
1 - 332 = -331
-331 ÷ 332 = -0.9969879518072289
-0.9969879518072289 x 100 = -99.7%