-79.46% is the change from 662 to 136
Calculation steps:
[( 136 - 662 ) ÷ 662] x 100 = -79.46%
Formula
Percentage change = [(136 - 662) / 662] x 100
Subtract the new number by the original number
136 - 662 = -526
-526 ÷ 662 = -0.7945619335347432
-0.7945619335347432 x 100 = -79.46%