-82.25% is the change from 817 to 145
Calculation steps:
[( 145 - 817 ) ÷ 817] x 100 = -82.25%
Formula
Percentage change = [(145 - 817) / 817] x 100
Subtract the new number by the original number
145 - 817 = -672
-672 ÷ 817 = -0.8225214198286414
-0.8225214198286414 x 100 = -82.25%