-80.42% is the change from 771 to 151
Calculation steps:
[( 151 - 771 ) ÷ 771] x 100 = -80.42%
Formula
Percentage change = [(151 - 771) / 771] x 100
Subtract the new number by the original number
151 - 771 = -620
-620 ÷ 771 = -0.8041504539559015
-0.8041504539559015 x 100 = -80.42%