-79.61% is the change from 662 to 135
Calculation steps:
[( 135 - 662 ) ÷ 662] x 100 = -79.61%
Formula
Percentage change = [(135 - 662) / 662] x 100
Subtract the new number by the original number
135 - 662 = -527
-527 ÷ 662 = -0.7960725075528701
-0.7960725075528701 x 100 = -79.61%