-82.74% is the change from 643 to 111
Calculation steps:
[( 111 - 643 ) ÷ 643] x 100 = -82.74%
Formula
Percentage change = [(111 - 643) / 643] x 100
Subtract the new number by the original number
111 - 643 = -532
-532 ÷ 643 = -0.8273716951788491
-0.8273716951788491 x 100 = -82.74%