-85.67% is the change from 642 to 92
Calculation steps:
[( 92 - 642 ) ÷ 642] x 100 = -85.67%
Formula
Percentage change = [(92 - 642) / 642] x 100
Subtract the new number by the original number
92 - 642 = -550
-550 ÷ 642 = -0.8566978193146417
-0.8566978193146417 x 100 = -85.67%