-38.52% is the change from 270 to 166
Calculation steps:
[( 166 - 270 ) ÷ 270] x 100 = -38.52%
Formula
Percentage change = [(166 - 270) / 270] x 100
Subtract the new number by the original number
166 - 270 = -104
-104 ÷ 270 = -0.3851851851851852
-0.3851851851851852 x 100 = -38.52%