-54.64% is the change from 366 to 166
Calculation steps:
[( 166 - 366 ) ÷ 366] x 100 = -54.64%
Formula
Percentage change = [(166 - 366) / 366] x 100
Subtract the new number by the original number
166 - 366 = -200
-200 ÷ 366 = -0.546448087431694
-0.546448087431694 x 100 = -54.64%