-24.38% is the change from 853 to 645
Calculation steps:
[( 645 - 853 ) ÷ 853] x 100 = -24.38%
Formula
Percentage change = [(645 - 853) / 853] x 100
Subtract the new number by the original number
645 - 853 = -208
-208 ÷ 853 = -0.24384525205158264
-0.24384525205158264 x 100 = -24.38%