-99.62% is the change from 266 to 1
Calculation steps:
[( 1 - 266 ) ÷ 266] x 100 = -99.62%
Formula
Percentage change = [(1 - 266) / 266] x 100
Subtract the new number by the original number
1 - 266 = -265
-265 ÷ 266 = -0.9962406015037594
-0.9962406015037594 x 100 = -99.62%