Chapter 6 - Percent - 6.1 Basics of Percent - 6.1 Exercises - Page 386: 50

80%

In order to write a decimal as a percent, we must perform the following steps. 1. Multiply by 100 2. Attach a percent symbol Therefore, .8 becomes $(.8\times100)$%=80%. So, the church building fund has 80% of the money needed.