-99.89% is the change from 920 to 1
Calculation steps:
[( 1 - 920 ) ÷ 920] x 100 = -99.89%
Formula
Percentage change = [(1 - 920) / 920] x 100
Subtract the new number by the original number
1 - 920 = -919
-919 ÷ 920 = -0.9989130434782608
-0.9989130434782608 x 100 = -99.89%