-74.92% is the change from 662 to 166
Calculation steps:
[( 166 - 662 ) ÷ 662] x 100 = -74.92%
Formula
Percentage change = [(166 - 662) / 662] x 100
Subtract the new number by the original number
166 - 662 = -496
-496 ÷ 662 = -0.7492447129909365
-0.7492447129909365 x 100 = -74.92%