-62.41% is the change from 266 to 100
Calculation steps:
[( 100 - 266 ) ÷ 266] x 100 = -62.41%
Formula
Percentage change = [(100 - 266) / 266] x 100
Subtract the new number by the original number
100 - 266 = -166
-166 ÷ 266 = -0.6240601503759399
-0.6240601503759399 x 100 = -62.41%