-85.45% is the change from 646 to 94
Calculation steps:
[( 94 - 646 ) ÷ 646] x 100 = -85.45%
Formula
Percentage change = [(94 - 646) / 646] x 100
Subtract the new number by the original number
94 - 646 = -552
-552 ÷ 646 = -0.8544891640866873
-0.8544891640866873 x 100 = -85.45%