120 decreased to 100 is a decrease of 16.67%
120
176
60.8
580
It decreased by 7.761%
When 25 is decreased by 20% the result 20.
When 180 is decreased by 40% the result is 108.
45
120 decreased to 100 is a decrease of 16.67%
40
20
120
176
60.8
When 40 is decreased by 30% the result is 28.
There will be an overall increase in the first number.