-66.77% is the change from 662 to 220
Calculation steps:
[( 220 - 662 ) ÷ 662] x 100 = -66.77%
Formula
Percentage change = [(220 - 662) / 662] x 100
Subtract the new number by the original number
220 - 662 = -442
-442 ÷ 662 = -0.6676737160120846
-0.6676737160120846 x 100 = -66.77%