-87.34% is the change from 790 to 100
Calculation steps:
[( 100 - 790 ) ÷ 790] x 100 = -87.34%
Formula
Percentage change = [(100 - 790) / 790] x 100
Subtract the new number by the original number
100 - 790 = -690
-690 ÷ 790 = -0.8734177215189873
-0.8734177215189873 x 100 = -87.34%