-99.21% is the change from 127 to 1
Calculation steps:
[( 1 - 127 ) ÷ 127] x 100 = -99.21%
Formula
Percentage change = [(1 - 127) / 127] x 100
Subtract the new number by the original number
1 - 127 = -126
-126 ÷ 127 = -0.9921259842519685
-0.9921259842519685 x 100 = -99.21%