-74.5% is the change from 651 to 166
Calculation steps:
[( 166 - 651 ) ÷ 651] x 100 = -74.5%
Formula
Percentage change = [(166 - 651) / 651] x 100
Subtract the new number by the original number
166 - 651 = -485
-485 ÷ 651 = -0.7450076804915514
-0.7450076804915514 x 100 = -74.5%